Glass preserving-jar



Patented Deo. 20, 1887.

MQANTHONY. GLASS PRESERVING JAR.

(No Model.)

Harney N. PETERS Pmmumgnpxwr, wmingnm nc of my improved fruit-jar.

UNITED STATES l ,ATE-NT einen.

MARK ANTHONY, or sAN IIRANoIsoo, CALIFORNIA.

GLASS PRESERVING'JAR.

' SPECIFICATION forming part of Letters Patent No. 375,246, datedDecember 20, 1887.

Application filed June 25,1887.

T0 @ZZ whom it may concern:

Be it known that I, MARK ANTHONY, a citizen of the United States,residing at San Francisco, in the county of San Francisco and State ofCalifornia, have invented certain new and useful Improvementsin GlassPreserving-Jars; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the saine, referencebein g had to the accompanying drawings, and to letters or figures ofreference marked thereon, which form a part of this specification.

Figure l of the drawings is a side elevation Fig. 2 is atop View ofsame; Fig. 3 is a partial central Vertical section of same. Fig. 4t is aside view of lid of jar. Fig. 5 is a detail top view of lid. Fig. 6 is atransverse section of spring II.

The object of this invention is to provide a f glass preserving-jarwhich can be readily and quickly closed, and wherein the cover will beallowed to yield under pressure to avoid fracture; and the inventionconsists in the construction and novel combination of parts, all

' as hereinafter set forth.

In the accompanying drawings, the letter A designates the glass jar,which is formed with a large throat, B, above which is an outwardlyaringmouth, C, which terminates in an inwardlyextending'ange, D, having atdiametrically-opposite points elongated notches E. The bevel or flare ofthe mouth is about thirty-five or forty degrees at the bearing portiona, or where the rubber gasket of the cover presses when the jar isclosed. The object of this inclination is to allow the cover to movedownward, and at the same time to press the rubber against the bearing cwithout having it engage the bearing with a choking or corking action.In this slope I have established a mean between a bearing which would betoo fiat and one which would approach too near the vertical.

F indicates the cover, which is formed with a central stud, 6,011 itsupper surface and with gradually-rising iianges or inclines c onopposite sides of its margin, said inclines-facing upward, as indicated.f

Between the base-rim of the cover and its outer margin, from which theinclines rise, is

serial No. 24a-iss. kno model.)

level of the highest points of its inclines and the general slope' ofits side (referred to as an imaginary linejoining the lower angularedges of its rim projections) are such as to correspondwith the depthofthe mout-l1 of the jar andthe slope of its bearing a. rubberring orgasket G is placed in position around the base-rim g, its upper surfaceis engaged by the annular bead or projection e, and when the cover isput in position in the mouth of the jar the lower surface of the rubberwill engage the inclined bearing a of said mouth.

H is a spring-fastening, which is made less elastic at its middleportion than at its end portions. This spring extends transverselyacross the cover, and an. opening or perforation, h, at its centerengages the stud of the cover, so that a journal is provided on whichthe spring can be turned. The spring is usually made stronger at itsmiddle portion by giving it a slight transverse concavity in that part,as indicated; but it is obvious that this increase of strength can beobtained by providing greater width or greater thickness of metal. 'Ihespring is cut sufficiently long to allow its ends to extend under theinwardlyturned iiange D of the mouth of the jar, the notches E E thereofpermitting the introduction of the ends of the spring below the end ofsaid flange D.

In order to introduce the spring, the cover should be turned until thelowest portions of its inclines are opposite said notches. Then thespring is introduced and turned around, its ends sliding under theflange D of the jar and upon the inclines c of the cover until sufcientpressure upon the rubber gasket is secured. In this operation the springalone is turned and the annular bead-like under projection, e, of thecover engages the rubber and presses it closely against the inclinedbearing of the jar-mouth, so that it has no tendency to slip or becomedisarranged in the act of fastening.

rI'he ends of the spring are sufficiently elastic to allow the cover toyield under great outward pressure of the gases or vapor evolved. So,also, when condensation takes place the cover is drawn inward slightly,and the slope,

Vhen the iiat roo ofthe mouth allows this action. The springbar,however, continues its pressure on the inclines of the cover when thiscondensation 0ccurs, so that the fastening remains secure.

In order to provide an escape for steam, au indentation, o, may be madein the cover, said indentation having a thin bottom, which can bereadily punctured with a sharp instrument. This opening may be scaled upafter the steam has passed oit.

Having described this invention, what I claim, and desire to secure byLetters Patent, 1s-

l. The combination, with the jar having a daring mouth and theinwardly-turned rimfiange provided with opposite notches, of the coverhaving opposite inclines rising from its marginal portion, a slopingside, and an annular angular projection or bead on said sloping side, arubber gasket, and transverse springfastening, substantially asspecified.

2. The combination, with aglass jar having a Haring mouth terminating inan inwardly! MARK ANTHONY.

IVitnesses:

THno. MUNGEN, PHILIP C. MASI.

